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Finding the Fourth Proportional to 219,158.58, 328,752.45 and 76,986.57

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Solution

The fourth proportional to 219,158.58, 328,752.45 and 76,986.57 is: 115,484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,158.58 : 328,752.45 = 76,986.57 : x
  2. Step 2: Convert to fraction form
    219,158.58/328,752.45 = 76,986.57/x
  3. Step 3: Cross multiply
    219,158.58x = 328,752.45 × 76,986.57
  4. Step 4: Simplify right side
    219,158.58x = 25,309,523,504.60
  5. Step 5: Solve for x
    x = 25,309,523,504.60/219,158.58
  6. Step 6: Final answer
    x = 115,484.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.